AutoCodes – Generic – B3462

B3462 Code - Right Rear Window Down Switch Circuit Low

Quick Answer

The window switch or window switch circuits that generate this Diagnostic Trouble Code (DTC) are built-in parts of the Driver Door Switch Assembly (DDSA). Common causes include Faulty Driver Door Switch Assembly (DDSA), Driver Door Switch Assembly (DDSA) harness is open or shorted, Driver Door Switch Assembly (DDSA) circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: B3462 indicates Right Rear Window Down Switch Circuit Low.
Common causes: Common causes include Faulty Driver Door Switch Assembly (DDSA), Driver Door Switch Assembly (DDSA) harness is open or shorted, Driver Door Switch Assembly (DDSA) circuit poor electrical connection.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 488

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Mar 06, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B3462 Description

The window switch or window switch circuits that generate this Diagnostic Trouble Code (DTC) are built-in parts of the Driver Door Switch Assembly (DDSA). There are no external circuits. The DDSA internally supplies power and ground to the contacts of each of the integral window switches. When one of the switches is operated, the switch contacts close, providing the DDSA with a specific window switch signal. The DDSA processes this signal, assigns a digital message to it, and sends the message to the appropriate Driver Door Module (DDM), Passenger Front Door Module (PDM), Left Rear Door Module (LRDM), or Right Rear Door Module (RRDM), via the class 2 serial data circuit. The door module, upon receiving the message, examines other relevant information available on the class 2 serial data line in order to determine if conditions are correct for window operation to occur. If conditions are correct, the door module applies power and ground to the associated window motor and circuits in order to move the window. If the DDSA determines that one of its built in window switches is closed for more than 15 continuous seconds, it sets the DTC.

OBDII Code B3462 - Right Rear Window Down Switch Circuit Low - AutoCodes.com — B3462 Code - Right Rear Window Down Switch Circuit Low

What does this mean?

What are the Possible Causes of the DTC B3462?

Faulty Driver Door Switch Assembly (DDSA)
Driver Door Switch Assembly (DDSA) harness is open or shorted
Driver Door Switch Assembly (DDSA) circuit poor electrical connection
Faulty Right Rear Door Module (RRDM)
Faulty Driver Door Module (DDM)

How to Fix the DTC B3462?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B3462 code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

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Need Help with the Code?

Get the B3462 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

B3462 Buick — Right Rear Window Down Switch Circuit Low
B3462 Cadillac — Right Rear Window Down Switch Circuit Low
B3462 Chevrolet — Right Rear Window Down Switch Circuit Low
B3462 GMC — Right Rear Window Down Switch Circuit Low

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about B3462 Code

1. What does OBDII code B3462 mean?

Code B3462 indicates a low voltage issue in the right rear window down switch circuit, suggesting an electrical fault in the system responsible for lowering the window.

2. What are common symptoms of code B3462?

Symptoms may include the right rear window not rolling down, intermittent functionality, or no response from the window switch.

3. What causes code B3462 to appear?

Common causes include a faulty window switch, damaged wiring or connectors in the circuit, or a malfunctioning window motor.

4. How can I diagnose code B3462?

Start by inspecting the right rear window switch, checking for loose or damaged wiring, and testing voltage and continuity in the circuit with a multimeter.

5. Can a bad window motor trigger code B3462?

Yes, a faulty window motor can cause the circuit to draw excess current or fail to operate properly, triggering this code.

6. Is code B3462 related to a blown fuse?

Potentially, as a blown fuse in the window circuit can lead to a loss of power and trigger this code. Always check fuses during diagnosis.

7. How do I fix code B3462?

Repairs may include replacing the right rear window switch, repairing damaged wiring or connectors, or replacing the window motor if necessary.

8. Can I drive with code B3462 active?

Yes, but the right rear window may not function properly, which could be inconvenient or a safety concern depending on the situation.

9. How much does it cost to fix code B3462?

Repair costs vary but typically range from $50 to $200 for parts and labor, depending on whether the switch, wiring, or motor needs replacement.

10. Can code B3462 clear itself?

No, this code will not clear itself. The underlying issue must be repaired, and the code cleared with an OBDII scanner.

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